Ampharos(デンリュウ) is the 55th Pokémon in the Johto Pokédex. It is an Electric-Type, and it is known as the Light Pokémon.

Ampharos uses the Static Ability. This Ability has a 30% chance of afflicting an opponent that uses an attack that makes contact with it with Paralysis. A second Ability is available to Ampharos from the Dream World, the Plus Ability. When using this Ability in conjunction with another Pokémon that has either the Plus or Minus Ability, its Special Attack increases by 50%.

Mareep can evolve into Flaaffy at Level 15 and can evolve into Ampharos at Level 30.

Ampharos is in the Egg Groups Monster and Field, and its Egg will hatch after approximately 5,120 Steps. It takes Ampharos 1,059,860 Experience Points to reach Level 100.

Ampharos has a yellow body and has a white belly, he/she is also able to stand on two feet. Ampharos's most distinguishing feature is its yellow and black tail with a red coloured ball on the end and the red ball on top of his forehead.

Ampharos can be found within the Altru Building and Altru Tower in Pokémon Ranger: Shadows of Almia. Ampharos appears within the 5th Trial room in Rasp Cavern, the west cave on the second floor of Mt. Layuda, and in the upper levels of the Oblivia Region Sky Fortress during the Present Era in Pokémon Ranger: Guardian Signs. In the past, Ampharos can be obtained in the Ice Temple missions "Round and Round! Find the Floor" and "Rush Ahead! Don't Look Back!" by defeating it or another Pokémon in its evolution line and obtaining a Slate. Whether that slate is for Ampharos or not won't be known until after defeating either level's Boss.

Ampharos is listed in the Black/White promo set and as a Rare Card in Pokémon Organized Play Series 7. Ampharos is listed as a Common Card in the VS (2; 1 Jasmine, 1 Lance) set, and as a Rare Card in the Neo Genesis, Neo revelation, Neo Destiny, Expedition (2), Aquapolis, EX Dragon (EX Card), EX Team Rocket Returns, EX Unseen Forces, EX Dragon Frontiers (Delta Species Card), Secret Wonders, Platinum, HeartGold/SoulSilver, and Call of Legends sets. Ampharos is also listed as an Ultra Rare card in the HeartGold/SoulSilver set.

Ampharos finds itself in the Never-Utilized and Rarely-Utilized Tiers of Competitive Battling. Ampharos isn't the typical Electric-Type as it doesn't have either low Defenses or high Speed. It doesn't have a real recovery move outside of Rest, which means it can still be worn down.